65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (c) 2015-2016, Linaro Limited
|
|
*/
|
|
#ifndef TEE_PRIVATE_H
|
|
#define TEE_PRIVATE_H
|
|
|
|
#include <linux/cdev.h>
|
|
#include <linux/completion.h>
|
|
#include <linux/device.h>
|
|
#include <linux/kref.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/types.h>
|
|
|
|
#define TEE_DEVICE_FLAG_REGISTERED 0x1
|
|
#define TEE_MAX_DEV_NAME_LEN 32
|
|
|
|
/**
|
|
* struct tee_device - TEE Device representation
|
|
* @name: name of device
|
|
* @desc: description of device
|
|
* @id: unique id of device
|
|
* @flags: represented by TEE_DEVICE_FLAG_REGISTERED above
|
|
* @dev: embedded basic device structure
|
|
* @cdev: embedded cdev
|
|
* @num_users: number of active users of this device
|
|
* @c_no_user: completion used when unregistering the device
|
|
* @mutex: mutex protecting @num_users and @idr
|
|
* @idr: register of user space shared memory objects allocated or
|
|
* registered on this device
|
|
* @pool: shared memory pool
|
|
*/
|
|
struct tee_device {
|
|
char name[TEE_MAX_DEV_NAME_LEN];
|
|
const struct tee_desc *desc;
|
|
int id;
|
|
unsigned int flags;
|
|
|
|
struct device dev;
|
|
struct cdev cdev;
|
|
|
|
size_t num_users;
|
|
struct completion c_no_users;
|
|
struct mutex mutex; /* protects num_users and idr */
|
|
|
|
struct idr idr;
|
|
struct tee_shm_pool *pool;
|
|
};
|
|
|
|
int tee_shm_init(void);
|
|
|
|
int tee_shm_get_fd(struct tee_shm *shm);
|
|
|
|
bool tee_device_get(struct tee_device *teedev);
|
|
void tee_device_put(struct tee_device *teedev);
|
|
|
|
void teedev_ctx_get(struct tee_context *ctx);
|
|
void teedev_ctx_put(struct tee_context *ctx);
|
|
|
|
struct tee_shm *tee_shm_alloc_user_buf(struct tee_context *ctx, size_t size);
|
|
struct tee_shm *tee_shm_register_user_buf(struct tee_context *ctx,
|
|
unsigned long addr, size_t length);
|
|
|
|
#endif /*TEE_PRIVATE_H*/
|